Rock and soil drilling device for mine

Abstract

The invention discloses a rock-soil drilling device for a mine, and belongs to the field of rock-soil drilling, the rock-soil drilling device comprises a drill rod, a drill bit, a cavity, a water conveying pipeline, a reversing valve, a hollow shaft and an auger blade, the drill bit is coaxially fixed at the bottom end of the drill rod, a fastener connected with an external drilling machine is mounted at the upper end part of the drill rod, the drill bit is provided with a plurality of vertically through chip grooves and a water outlet, and the auger blade is arranged in the cavity. A hollow cavity is formed in the drill bit, and the water outlet and the cavity are communicated with the water conveying pipeline. When liquid injection is not suitable, the reversing valve is controlled to enable the water conveying pipeline to be communicated with the cavity, so that outside liquid flows out of the water conveying pipeline after passing through the water conveying pipeline and the cavity, cooling of the drill bit is achieved, and at the moment, the liquid is not discharged out of the water outlet; rock debris can move outwards along the hole and move to the position above the lower supporting disc through the lower discharging opening and the one-way valve, and after the debris is accumulated to a certain degree, the drill rod is gradually pulled out.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical drilling, and particularly to a geotechnical drilling device for a mine. Background Art

[0002] During the process of coal mine exploitation, various holes often need to be drilled for various needs. For example, when measuring the height of the coal mine collapse zone and the water-conducting fissure zone by the observation method of the leakage amount of the drilling fluid, holes need to be drilled in advance. In the existing drilling devices, during the drilling process, for the consideration of cooling and chip removal, liquid injection (water injection) is usually carried out simultaneously. However, in some cases, it is not suitable for liquid injection. When the hole is relatively deep and not suitable for liquid injection (such as when using the observation method of the leakage amount of the drilling fluid, reducing the liquid scouring when drilling near the test point can reduce the liquid interference), the chip removal of the traditional drilling device becomes difficult, thus affecting the progress of the drilling work, highlighting the deficiencies of the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to provide a geotechnical drilling device for a mine to solve the technical problem that the chip removal of the drilling device is difficult when liquid injection is not used.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A geotechnical drilling device for a mine includes a drill pipe, a drill bit, a chip removal groove, a drain port, a chamber, a water delivery pipeline, a reversing valve, a hollow shaft, and a auger blade. The bottom end of the drill pipe is coaxially fixed with the drill bit, and the upper end is provided with a fastener connected to an external drilling rig. The drill bit is provided with a plurality of chip removal grooves penetrating up and down, and a drain port is opened. A hollow chamber is arranged inside the drill bit. The drain port and the chamber are respectively communicated with the water delivery pipeline. The water delivery pipeline is connected to an external water supply system. The drain port and the chamber are provided with a reversing valve, and the reversing valve can control whether the water delivery pipeline is communicated with the drain port and the chamber. When the water delivery pipeline is communicated with the drain port, the liquid can be discharged through the drain port to the lower part of the drill bit. When the water delivery pipeline is communicated with the chamber, continuous flow of the liquid can be realized between the outside and the chamber. A vertical hollow shaft is axially and coaxially inserted into the drill pipe. The outer wall of the hollow shaft is coaxially fixed with the auger blade and is fastened to the drill pipe through a fastener. A lower support disk is coaxially rotatably connected to the middle part of the drill pipe. The lower support disk is coaxially arranged relative to the drill pipe and is provided with a plurality of lower discharge ports penetrating up and down. One-way valves are respectively installed in each of the lower discharge ports. The one-way valves only allow upward flow, and the one-way valves in the lower discharge ports can completely block the lower discharge ports.

[0005] On the basis of the above technical solution, the reversing valve includes a valve hole, an upper support ring, a lower support ring, a lower valve core, an upper valve core, a tension spring, a compression spring, and a liquid discharge groove. The drain port is vertically opened in the middle of the bottom end of the drill bit. A vertical valve hole is provided in the middle of the drill bit. The upper part of the drain port is communicated with the bottom of the valve hole. The drain port and the valve hole are coaxially arranged. The inner diameter of the drain port is larger than the inner diameter of the valve hole. The upper support ring and the lower support ring are coaxially fixed to the inner wall of the valve hole in sequence from top to bottom. The lower valve core is slidably connected up and down with the drain port. The upper valve core is hermetically slidably connected up and down with the valve hole. A tension spring is commonly fixed between the lower valve core and the bottom end of the lower support ring. A compression spring is commonly fixed between the upper valve core and the top end of the lower support ring. Under the elastic tension of the tension spring, the lower valve core has a tendency to slide upward along the drain port so that its top end can seal and block the bottom of the valve hole, and a liquid discharge groove penetrating up and down is opened on the outer circumferential wall. Under the elastic repulsive force of the compression spring, the upper valve core has a tendency to slide upward along the valve hole and can fit with the bottom end of the upper support ring to seal and block the upper part of the valve hole. The water delivery pipeline includes an upper through hole, a lower through hole, an upper pipeline, and a lower pipeline. The chamber is sequentially communicated with the upper through hole and the lower through hole from top to bottom. The upper part of the upper pipeline and the upper part of the lower pipeline are respectively communicated with the external water supply system. The upper pipeline is communicated with the other end of the upper through hole. The other end of the lower through hole is communicated with the upper part of the valve hole. The part where the lower through hole is communicated with the valve hole is above the upper support ring. The bottom of the lower pipeline is communicated with the middle of the valve hole. When the upper valve core is pushed downward by an external force, it can be located below the connection between the lower pipeline and the valve hole so that the lower pipeline is communicated with the lower through hole.

[0006] On the basis of the above technical solution, a guide plate made of metal is fixed in the chamber. The guide plate divides the chamber into an uninterrupted and curved water flow channel. One end of the water flow channel is communicated with the upper through hole, and the other end is communicated with the lower through hole.

[0007] On the basis of the above technical solution, the lower support disc includes a lower support cylinder, a lower rotating disc, a sliding arm, a roller, and a secondary compression spring. The lower support cylinder is coaxially inserted into the drill pipe and fixed to the top end of the hollow shaft. A lower rotating disc is coaxially rotatably connected to the outside of the lower support cylinder. Four sliding arms are radially slidably connected to the lower rotating disc at equal angles in the circumferential direction. Two rollers are respectively rotatably connected to the ends of each sliding arm away from the virtual axis of the drill pipe. The virtual axis of the roller is perpendicular to the virtual axis of the drill pipe. A secondary compression spring is also fixed between the sliding arm and the lower rotating disc. Under the elastic repulsive force of the secondary compression spring, the sliding arm has a tendency to move away from the virtual axis of the drill pipe. The lower discharge port penetrates up and down at the circumferential part of the lower rotating disc.

[0008] On the basis of the above technical solution, an upper support disc is installed on the upper part of the drill pipe. The upper support disc includes an upper support cylinder, an upper rotating disc, sliding arms, rollers, auxiliary compression springs, upper discharge ports, and one-way valves. The upper support cylinder is coaxially inserted into the drill pipe. An upper rotating disc is coaxially rotatably connected to the outside of the upper support cylinder. The upper rotating disc is also radially slidably connected with four sliding arms at equal angles in the circumferential direction. At the end parts of each sliding arm far from the virtual axis of the drill pipe, two rollers are respectively rotatably connected. An auxiliary compression spring is also fixed between the sliding arm and the upper rotating disc. The sliding arms slidably connected to the upper rotating disc tend to move away from the virtual axis of the drill pipe under the elastic repulsive force of the auxiliary compression spring. A guide cylinder is jointly fixed between the lower rotating disc and the upper rotating disc. The guide cylinder is coaxially arranged with respect to the drill pipe. The upper support disc is vertically penetrated by a plurality of upper discharge ports, and one-way valves are also installed in the upper discharge ports. The one-way valves in the upper discharge ports can block the upper discharge ports. The water delivery pipeline further includes a middle pipeline, middle water inlet holes, middle water discharge holes, and auxiliary one-way valves. The middle pipeline is located inside the drill pipe and radially penetrates the drill pipe to form middle water inlet holes and middle water discharge holes. An auxiliary one-way valve is installed in the middle water discharge hole. The auxiliary one-way valve only allows fluid to flow out from the middle water discharge hole. The middle water discharge hole is located inside the guide cylinder, and the middle water inlet hole is located above the outside of the guide cylinder.

[0009] On the basis of the above technical solution, an annular airbag is fixed to the outer circumferential parts of the lower rotating disc and the upper rotating disc. The outer circumferential wall of the airbag is exposed to the outside. The airbag is coaxially arranged with respect to the drill pipe, and its inner circumferential part is fixedly communicated with an air vent nozzle. The lower rotating disc is fixed with a two-way nozzle. The bottom port of the two-way nozzle is fixedly communicated with the air vent nozzle of the airbag of the lower rotating disc. The upper support disc is fixed with a vertical three-way nozzle. The middle port of the three-way nozzle is fixedly communicated with the air vent nozzle of the airbag of the upper support disc. The upper port of the three-way nozzle is connected to an external compressed air supply system. The bottom port of the three-way nozzle is fixed with a lower air delivery pipe and is communicated with the upper part of the two-way nozzle through the lower air delivery pipe. The lower air delivery pipe is located inside the guide cylinder.

[0010] On the basis of the above technical solution, an upper water inlet hole is formed by radially penetrating the upper pipeline and the upper part of the drill pipe, and a lower water inlet hole is formed by radially penetrating the lower pipeline and the upper part of the drill pipe. The upper water inlet hole and the lower water inlet hole are respectively located above the upper support plate. A vertical mounting plate is inserted into the upper part of the drill pipe. The mounting plate is fastened to the drill pipe through fasteners. The fasteners are known prior arts, such as bolts. The mounting plate is sealed and rotatably connected with a water delivery cylinder. The water delivery cylinder is fixedly communicated with three water delivery nozzles and forms upper, middle and lower separated water delivery cavities with the mounting plate. Each water delivery nozzle is communicated with each water delivery cavity respectively. The upper water inlet hole, the middle water inlet hole and the lower water inlet hole are respectively communicated with each water delivery cavity. A support arm is fixed on the outer wall of the water delivery cylinder. The support arm is fixed with a vertical upper air delivery pipe. The upper air delivery pipe is fixedly communicated with the upper port of a three-way nozzle. The upper port of the three-way nozzle is connected with an external compressed air supply system through the upper air delivery pipe. Each water delivery nozzle is connected with an external water supply system through an external hose.

[0011] On the basis of the above technical solution, the one-way valve includes a retaining strip, a baffle plate and a torsion spring. Horizontal retaining strips are respectively fixed on the inner walls of the lower discharge port and the upper discharge port, and baffle plates are respectively hinged above and below. The hinged positions of the baffle plates are far away from the retaining strips. A torsion spring is jointly installed between the lower discharge port and the baffle plate therein, and a torsion spring is also jointly installed between the upper discharge port and the baffle plate therein. Under the elastic repulsive force of the torsion spring, the baffle plate always has a tendency to swing downward. Under the elastic repulsive force of the torsion spring, the baffle plate can touch the top of the retaining strip to block the lower discharge port and the upper discharge port respectively, and can turn upward when pushed upward by an external force to make the lower discharge port and the upper discharge port conduct.

[0012] Compared with the prior art, the present invention has the following advantages: when liquid injection is not suitable in the present invention, the reversing valve is controlled to connect the water delivery pipeline with the chamber, so that the external liquid flows out from the water delivery pipeline after passing through the water delivery pipeline and the chamber, thereby realizing the cooling of the drill bit. At this time, the liquid does not discharge from the drain port. Due to the rotation of the auger blade, the rock and soil debris can be moved along the hole outward and move to the upper part of the lower support plate through the lower discharge port and the one-way valve. After accumulating to a certain extent, the drill pipe is gradually pulled out. At this time, the one-way valve is closed under the extrusion of the rock and soil debris, and the rock and soil debris at the top of the lower support plate can be dragged out, making the discharge of the rock and soil debris more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an isometric structural schematic diagram of the present invention.

[0014] Figure 2 It is a schematic diagram of the cooperation of the upper support plate and the lower support plate of the present invention with the drill pipe.

[0015] Figure 3 It is a front sectional structural schematic diagram of the upper part of the present invention.

[0016] Figure 4 This is a schematic front cross-sectional view of the bottom of the present invention.

[0017] Figure 5 This is a schematic cross-sectional view of the lower gas pipeline of the present invention when it cooperates with the two-way nozzle and the three-way nozzle.

[0018] Figure 6 This is a schematic right cross-sectional view of the present invention.

[0019] Figure 7 This is a schematic front cross-sectional view of the lower support cylinder and the lower rotating disk of the present invention.

[0020] In the figure: 1, drill pipe; 2, drill bit; 3, chip removal groove; 4, drain port; 5, chamber; 8, hollow shaft; 9, auger blade; 11, lower discharge port; 13, valve hole; 14, upper support ring; 15, lower support ring; 16, lower valve core; 17, upper valve core; 18, tension spring; 19, compression spring; 20, liquid discharge groove; 21, upper through hole; 22, lower through hole; 23, upper pipeline; 24, lower pipeline; 25, guide plate; 26, water flow channel; 27, lower support cylinder; 28, lower rotating disk; 29, sliding arm; 30, roller; 31, auxiliary compression spring; 33, upper support cylinder; 34, upper rotating disk; 35, upper discharge port; 36, guide cylinder; 37, middle pipeline; 38, middle water inlet hole; 39, middle drain hole; 391, auxiliary one-way valve; 40, airbag; 41, air vent nozzle; 42, two-way nozzle; 43, three-way nozzle; 44, lower gas pipeline; 45, upper water inlet hole; 46, lower water inlet hole; 47, mounting plate; 48, water delivery cylinder; 49, water delivery nozzle; 50, water delivery chamber; 51, support arm; 52, upper gas pipeline; 53, retaining bar; 54, baffle plate; 55, torsion spring. Detailed implementation manners

[0021] The present invention will be further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] As Figures 1-7As shown in the figure, a geotechnical drilling device for a mine includes a drill pipe 1, a drill bit 2, a chip discharge groove 3, a drain port 4, a chamber 5, a water delivery pipeline, a reversing valve, a hollow shaft 8, and an auger blade 9. The bottom end of the drill pipe 1 is coaxially fixed with the drill bit 2, and a fastener for connecting with an external drill rig is installed at the upper end. The drill bit 2 is provided with a plurality of chip discharge grooves 3 penetrating up and down, and a drain port 4 is opened. A hollow chamber 5 is arranged inside the drill bit 2. The drain port 4 and the chamber 5 are respectively communicated with the water delivery pipeline. The water delivery pipeline is connected with an external water supply system. A reversing valve is installed at the drain port 4 and the chamber 5. The reversing valve can control whether the water delivery pipeline is communicated with the drain port 4 and the chamber 5. When the water delivery pipeline is communicated with the drain port 4, the liquid can be discharged through the drain port 4 to the lower part of the drill bit 2. When the water delivery pipeline is communicated with the chamber 5, continuous flow of the liquid can be realized between the outside and the chamber 5. A vertical hollow shaft 8 is axially and coaxially inserted into the drill pipe 1. The outer wall of the hollow shaft 8 is coaxially fixed with the auger blade 9 and is fastened to the drill pipe 1 through a fastener. A lower support plate is coaxially rotatably connected to the middle of the drill pipe 1. The lower support plate is coaxially arranged relative to the drill pipe 1 and is provided with a plurality of lower discharge ports 11 penetrating up and down. One-way valves are respectively installed in the lower discharge ports 11. The one-way valves only allow upward flow and can completely block the lower discharge ports 11.

[0023] During use, the drill pipe 1 and the drill pipe of the external drill rig are coaxially fastened by using a fastener, so that the drill rig can drive the drill pipe 1 and the drill bit 2 to rotate when rotating, and the rotation direction of the drill bit 2 is the same as the rotary drilling direction of the auger blade 9. Drilling of the geotechnical layer is realized by the rotation of the drill pipe 1 and the drill bit 2 to form a hole. When liquid injection is required, water is injected through the water delivery pipeline, and the reversing valve is controlled to make the drain port 4 conductive, so that water is drained through the drain port 4. The mixture of water and geotechnical layer gushes out along the drill hole. During this period, it passes through the auger blade 9, the lower discharge ports 11 and the one-way valves. When liquid injection is not suitable, the reversing valve is controlled to make the water delivery pipeline communicate with the chamber 5, so that the external liquid passes through the water delivery pipeline and the chamber 5 and then flows out from the water delivery pipeline, thereby realizing cooling of the drill bit 2. At this time, the liquid does not drain from the drain port 4. Due to the rotation of the auger blade 9, the geotechnical debris can be moved out along the hole and move to the upper part of the lower support plate through the lower discharge ports 11 and the one-way valves. After accumulating to a certain extent, the drill pipe 1 is gradually withdrawn. At this time, the one-way valve is closed by the extrusion of the geotechnical debris, and the geotechnical debris at the top of the lower support plate can be dragged out.

[0024] The reversing valve includes a valve hole 13, an upper support ring 14, a lower support ring 15, a lower valve core 16, an upper valve core 17, a tension spring 18, a compression spring 19, and a liquid discharge groove 20. The drain port 4 is vertically opened in the middle of the bottom end of the drill bit 2. A vertical valve hole 13 is provided in the middle of the drill bit 2. The upper part of the drain port 4 is communicated with the bottom of the valve hole 13. The drain port 4 and the valve hole 13 are coaxially arranged. The inner diameter of the drain port 4 is larger than the inner diameter of the valve hole 13. The upper support ring 14 and the lower support ring 15 are coaxially and fixedly arranged on the inner wall of the valve hole 13 from top to bottom in sequence. The lower valve core 16 is slidably connected up and down with the drain port 4. The upper valve core 17 is hermetically and slidably connected up and down with the valve hole 13. A tension spring 18 is jointly fixed between the lower valve core 16 and the bottom end of the lower support ring 15. A compression spring 19 is jointly fixed between the upper valve core 17 and the top end of the lower support ring 15. Under the elastic tension of the tension spring 18, the lower valve core 16 has a tendency to slide upward along the drain port 4 so that its top end can seal and block the bottom of the valve hole 13, and a liquid discharge groove 20 penetrating up and down is opened on the outer circumferential wall. Under the elastic repulsive force of the compression spring 19, the upper valve core 17 has a tendency to slide upward along the valve hole 13 and can fit with the bottom end of the upper support ring 14 to seal and block the upper part of the valve hole 13. The water delivery pipeline includes an upper through hole 21, a lower through hole 22, an upper pipeline 23, and a lower pipeline 24. The chamber 5 is sequentially communicated with the upper through hole 21 and the lower through hole 22 from top to bottom. The upper part of the upper pipeline 23 and the upper part of the lower pipeline 24 are respectively communicated with an external water supply system. The upper pipeline 23 is communicated with the other end of the upper through hole 21. The other end of the lower through hole 22 is communicated with the upper part of the valve hole 13. The part where the lower through hole 22 is communicated with the valve hole 13 is above the upper support ring 14. The bottom of the lower pipeline 24 is communicated with the middle of the valve hole 13. When the upper valve core 17 is pushed downward by an external force, it can be located below the connection between the lower pipeline 24 and the valve hole 13 so that the lower pipeline 24 is communicated with the lower through hole 22.

[0025] Further, when it is necessary to drain water from the drain port 4, water is supplied to the lower pipeline 24 through an external water supply system. At this time, the water flow surges into the valve hole 13, squeezing the upper valve core 17 upward and the lower valve core 16 downward. The upper valve core 17 seals and plugs the upper support ring 14 under the squeezing of the water flow and the elastic repulsive force of the compression spring 19, while the lower valve core 16 moves downward by overcoming the elastic tension of the tension spring 18 under the squeezing of the water flow, so that the water flow is discharged from the drain port 4 through the lower support ring 15 and the liquid discharge groove 20. When it is not necessary to drain water from the drain port 4 but it is necessary to cool the drill bit 2, cold water is continuously supplied to the upper pipeline 23 through an external water supply system. At this time, the water flow enters the chamber 5 through the upper through hole 21, and then flows into the upper part of the valve hole 13 through the lower through hole 22 to squeeze the upper valve core 17 downward, so that the upper valve core 17 moves downward by overcoming the elastic repulsive force of the compression spring 19 until the water flow is discharged through the lower pipeline 24, realizing the continuous flow of water from the outside to the chamber 5 and achieving the cooling effect on the drill bit 2. After the water supply is stopped, the upper valve core 17 and the lower valve core 16 are reset under the elastic force of the tension spring 18 and the compression spring 19.

[0026] A guide plate 25 made of metal is fixed in the chamber 5. The guide plate 25 divides the chamber 5 into an uninterrupted and curved water flow channel 26. One end of the water flow channel 26 is communicated with the upper through hole 21, and the other end is communicated with the lower through hole 22.

[0027] Further, when the water flow flows into the chamber 5 through the upper through hole 21, it continuously bends and flows along the water flow channel 26 under the guidance of the guide plate 25, and finally flows into the valve hole 13 through the lower through hole 22. Due to the continuous bending flow of the water flow in the water flow channel 26, the contact time and area with the chamber 5 and the guide plate 25 can be increased, thereby improving the heat exchange effect, that is, improving the heat dissipation effect on the drill bit 2.

[0028] The lower support disc includes a lower support cylinder 27, a lower rotating disc 28, a sliding arm 29, a roller 30, and a secondary compression spring 31. The lower support cylinder 27 is coaxially inserted into the drill pipe 1 and fixed to the top end of the hollow shaft 8. A lower rotating disc 28 is coaxially and rotatably connected to the outside of the lower support cylinder 27. Four sliding arms 29 are radially and slidably connected to the lower rotating disc 28 at equal angles in the circumferential direction. Two rollers 30 are respectively rotatably connected to the ends of each sliding arm 29 away from the virtual axis of the drill pipe 1. The virtual axis of the roller 30 is perpendicular to the virtual axis of the drill pipe 1. A secondary compression spring 31 is also fixed between the sliding arm 29 and the lower rotating disc 28. The sliding arm 29 has a tendency to move away from the virtual axis of the drill pipe 1 under the elastic repulsive force of the secondary compression spring 31. The lower discharge port 11 penetrates through the circumferential part of the lower rotating disc 28 up and down.

[0029] Further, during the drilling process, the sliding arm 29 has a tendency to expand and slide outwards under the elastic repulsive force of the auxiliary compression spring 31, so that the roller 30 can roll axially against the inner wall of the hole, and then the circumferential position of the lower rotating disc 28 relative to the hole can be restricted to remain unchanged. Then, when the auger blade 9 rotates following the drill bit 2, the drill pipe 1 and the hollow shaft 8, it also rotates relative to the lower rotating disc 28, which is conducive to the upward discharge of debris or water through the lower discharge port 11 and the check valve.

[0030] An upper support disc is installed on the upper part of the drill pipe 1. The upper support disc includes an upper support cylinder 33, an upper rotating disc 34, a sliding arm 29, a roller 30, an auxiliary compression spring 31, an upper discharge port 35, and a check valve. The upper support cylinder 33 is coaxially inserted into the drill pipe 1. An upper rotating disc 34 is coaxially rotatably connected to the outside of the upper support cylinder 33. The upper rotating disc 34 is also radially slidably connected with four sliding arms 29 at equal circumferential angles. The end parts of each sliding arm 29 far from the virtual axis of the drill pipe 1 are respectively rotatably connected with two rollers 30. An auxiliary compression spring 31 is also fixed between the sliding arm 29 and the upper rotating disc 34. The sliding arm 29 slidably connected to the upper rotating disc 34 has a tendency to move away from the virtual axis of the drill pipe 1 under the elastic repulsive force of the auxiliary compression spring 31. A guide cylinder 36 is jointly fixed between the lower rotating disc 28 and the upper rotating disc 34. The guide cylinder 36 is coaxially arranged relative to the drill pipe 1. The upper support disc is vertically penetrated by a plurality of upper discharge ports 35. A check valve is also installed in the upper discharge port 35. The check valve in the upper discharge port 35 can block the upper discharge port 35. The water delivery pipeline further includes a middle pipeline 37, a middle water inlet hole 38, a middle water discharge hole 39, and an auxiliary check valve 391. The middle pipeline 37 is located inside the drill pipe 1 and radially penetrates the drill pipe 1 to form a middle water inlet hole 38 and a middle water discharge hole 39. An auxiliary check valve 391 is installed in the middle water discharge hole 39. The auxiliary check valve 391 only allows fluid to flow out from the middle water discharge hole 39. The middle water discharge hole 39 is located inside the guide cylinder 36. The middle water inlet hole 38 is located above the outside of the guide cylinder 36.

[0031] Furthermore, by also providing the sliding arm 29, the roller 30, and the auxiliary compression spring 31 on the upper rotating disk 34, the same functions as those provided by the sliding arm 29, the roller 30, and the auxiliary compression spring 31 provided on the lower rotating disk 28 can be achieved. As a result, during the rotation of the drill pipe 1, the guide cylinder 36 can be kept stationary relative to the hole. At this time, if water is drained from the drain port 4, the mixture of debris and water will be discharged through the lower discharge port 11, the guide cylinder 36, and the upper discharge port 35 (this state is called a2); if the drain port 4 does not drain water, under the rotation of the auger blade 9, the debris is temporarily stored in the guide cylinder 36 through the lower discharge port 11 and the one-way valve. At this time, the inner wall of the hole corresponding to the guide cylinder 36 and the auger blade 9 is not affected by the scouring of the water flow. When it is necessary to discharge the debris in the guide cylinder 36, the drill pipe 1 can be lifted a certain height so that the guide cylinder 36 is away from the inner wall of the hole that needs to be protected from the scouring of the water flow, or directly lifted out of the hole (this state is called a2). Subsequently, water is injected into the middle water inlet hole 38. At this time, the water flow is discharged into the guide cylinder 36 through the middle drain hole 39. At this time, the one-way valve in the lower discharge port 11 is closed by the downward extrusion, while the one-way valve in the upper discharge port 35 is opened by the upward extrusion, thereby flushing out the debris, greatly reducing the scouring of the water flow on the inner wall of the hole below the guide cylinder 36. At the same time, during the lifting process, the guide cylinder 36 temporarily stores the debris, and also avoids the contact between the debris therein and the inner wall of the hole, thereby reducing the damage to the inner wall of the hole.

[0032] An annular airbag 40 is fixed to the outer circumferential parts of the lower rotating disk 28 and the upper rotating disk 34. The outer circumferential wall of the airbag 40 is exposed to the outside. The airbag 40 is coaxially arranged with respect to the drill pipe 1, and an air vent 41 is fixedly connected to the inner circumferential part thereof. The lower rotating disk 28 is fixed with a two-way nozzle 42. The bottom port of the two-way nozzle 42 is fixedly connected to the air vent 41 of the airbag 40 of the lower rotating disk 28. The upper support disk is fixed with a vertical three-way nozzle 43. The middle port of the three-way nozzle 43 is fixedly connected to the air vent 41 of the airbag 40 of the upper support disk. The upper port of the three-way nozzle 43 is connected to an external compressed air supply system. The bottom port of the three-way nozzle 43 is fixed with a lower air delivery pipe 44, and is connected to the upper part of the two-way nozzle 42 through the lower air delivery pipe 44. The lower air delivery pipe 44 is located in the guide cylinder 36.

[0033] Further, when in the a1 or a2 state, a certain volume of compressed air can be supplied to the two airbags 40 through an external compressed air supply system. At this time, the airbags 40 expand, and can fit and squeeze the inner wall of the hole for plugging. If it is in the a1 state, water flow and debris can gush out of the hole through the lower discharge outlet 11, the guiding cylinder 36 and the upper discharge outlet 35 as much as possible, and the influx into the gap between the guiding cylinder 36 and the inner wall of the hole can be reduced as much as possible. If it is in the a2 state, debris can enter the guiding cylinder 36 through the lower discharge outlet 11 as much as possible, and then the mixed water gushes out of the hole through the upper discharge outlet 35, and the influx into the gap between the guiding cylinder 36 and the inner wall of the hole can be reduced as much as possible, thereby reducing the jamming between the guiding cylinder and the inner wall of the hole, and protecting the inner wall of the hole corresponding to the guiding cylinder at the same time.

[0034] The upper pipeline 23 and the upper part of the drill pipe 1 penetrate radially to form an upper water inlet hole 45, and the lower pipeline 24 and the upper part of the drill pipe 1 penetrate radially to form a lower water inlet hole 46. The upper water inlet hole 45 and the lower water inlet hole 46 are respectively located above the upper support plate. A vertical mounting plate 47 is inserted into the upper part of the drill pipe 1. The mounting plate 47 is fastened to the drill pipe 1 through a fastener. The fastener is a known prior art, such as a bolt. The mounting plate 47 is hermetically and rotatably connected with a water delivery cylinder 48. The water delivery cylinder 48 is fixedly communicated with three water delivery nozzles 49, and forms upper, middle and lower separated water delivery cavities 50 with the mounting plate 47. Each water delivery nozzle 49 is respectively communicated with each water delivery cavity 50. The upper water inlet hole 45, the middle water inlet hole 38 and the lower water inlet hole 46 are respectively communicated with each water delivery cavity 50. A support arm 51 is fixed on the outer wall of the water delivery cylinder 48. The support arm 51 is fixed with a vertical upper air delivery pipe 52. The upper air delivery pipe 52 is fixedly communicated with the upper through hole of the three-way nozzle 43. The upper through hole of the three-way nozzle 43 is connected with an external compressed air supply system through the upper air delivery pipe 52. Each water delivery nozzle 49 is connected with an external water supply system through an external hose.

[0035] Further, the water delivery cylinder 48 rotates relative to the mounting plate 47, and the upper rotating plate 34 is linked with the water delivery cylinder 48 through the three-way nozzle 43, the upper air delivery pipe 52 and the support arm 51. Therefore, during the rotation of the drill pipe 1, the circumferential position of the water delivery cylinder 48 relative to the inner wall of the hole remains unchanged, so that the external water supply system can stably supply water to each water delivery nozzle 49, that is, stably supply water to the upper pipeline 23, the middle pipeline 37 and the lower pipeline 24.

[0036] The one-way valve includes a stop bar 53, a baffle 54, and a torsion spring 55. Horizontal stop bars 53 are respectively fixed to the inner walls of the lower discharge outlet 11 and the upper discharge outlet 35, and baffles 54 are respectively hinged above and below. The hinged positions of the baffles 54 are away from the stop bars 53. A torsion spring 55 is commonly installed between the lower discharge outlet 11 and the baffle 54 therein, and a torsion spring 55 is also commonly installed between the upper discharge outlet 35 and the baffle 54 therein. The baffle 54 always has a tendency to swing downward under the elastic repulsive force of the torsion spring 55. The baffle 54 can contact the top of the stop bar 53 under the elastic repulsive force of the torsion spring 55 to block the lower discharge outlet 11 and the upper discharge outlet 35 respectively, and can flip upward when pushed upward by an external force to make the lower discharge outlet 11 and the upper discharge outlet 35 communicate.

[0037] The above is a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions, and variations made to the embodiments still fall within the protection scope of the present invention.

Claims

1. A rock drilling device for a mine, comprising a drill rod (1), a drill bit (2), a chip removal groove (3), a water outlet (4), a chamber (5), a water delivery pipeline, a reversing valve, a hollow shaft (8), and an auger blade (9), wherein the drill bit (2) is coaxially fixed to the bottom end of the drill rod (1), and a fastener connected to an external drilling machine is installed at the upper end, the drill bit (2) is provided with a plurality of chip removal grooves (3) penetrating from top to bottom, and is provided with a water outlet (4), the drill bit (2) is provided with a hollow chamber (5) inside, and the water outlet (4) The drain port (4) and the chamber (5) are respectively connected to a water pipeline, the water pipeline is connected to an external water supply system, the drain port (4) and the chamber (5) are provided with a reversing valve, the reversing valve can control whether the water pipeline is connected to the drain port (4) and the chamber (5), when the water pipeline is connected to the drain port (4), liquid can be discharged to the bottom of the drill bit (2) through the drain port (4), when the water pipeline is connected to the chamber (5), continuous flow of liquid can be achieved between the outside and the chamber (5), and the characteristics are: The drill rod (1) is axially and coaxially plugged with a vertical hollow shaft (8); an auger blade (9) is coaxially fixed to the outer wall of the hollow shaft (8) and is fastened to the drill rod (1) via a fastener; the middle of the drill rod (1) is coaxially rotatably connected to a lower support plate; the lower support plate is coaxially arranged with respect to the drill rod (1) and has a plurality of lower discharge ports (11) extending therethrough; each of the lower discharge ports (11) is respectively installed with a one-way valve, the one-way valve only allowing upward flow; the one-way valve in the lower discharge port (11) is capable of completely blocking the lower discharge port (11).

2. The device for rock drilling in a mine according to claim 1, characterized in that: The reversing valve comprises a valve hole (13), an upper support ring (14), a lower support ring (15), a lower valve core (16), an upper valve core (17), a tension spring (18), a compression spring (19), and a drainage groove (20); the drainage port (4) is vertically opened in the middle of the bottom end of the drill bit (2); a vertical valve hole (13) is provided in the middle of the drill bit (2); the upper part of the drainage port (4) is connected to the bottom of the valve hole (13); the drainage port (4) and the valve hole (13) are coaxially arranged; the inner diameter of the drainage port (4) is larger than the inner diameter of the valve hole (13); and the inner wall of the valve hole (13) is 1.3 mm thick from top to bottom. An upper support ring (14) and a lower support ring (15) are coaxially fixed in sequence, the drain port (4) is slidably connected to a lower valve core (16), the valve hole (13) is sealed and slidably connected to an upper valve core (17), a tension spring (18) is fixed between the bottom ends of the lower valve core (16) and the lower support ring (15), a compression spring (19) is fixed between the top ends of the upper valve core (17) and the lower support ring (15), and the lower valve core (16) has a tendency to slide upward along the drain port (4) under the elastic tension of the tension spring (18), so that its top end can be aligned with the valve hole (13). ) is sealed at the bottom, and a drainage groove (20) is formed on the outer circumferential wall and runs through the upper and lower parts. The upper valve core (17) has a tendency to slide up along the valve hole (13) under the elastic repulsive force of the compression spring (19) and can fit with the bottom end of the upper support ring (14) to seal the upper part of the valve hole (13). The water delivery pipeline comprises an upper through hole (21), a lower through hole (22), an upper pipeline (23) and a lower pipeline (24). The chamber (5) is connected to the upper through hole (21) and the lower through hole (22) in sequence from top to bottom. The upper part of the upper pipeline (23) and the lower pipeline (24) are connected to each other. 4) The upper part is respectively connected to the external water supply system, the upper pipeline (23) is connected to the other end of the upper through hole (21), the other end of the lower through hole (22) is connected to the upper part of the valve hole (13), the part where the lower through hole (22) is connected to the valve hole (13) is located above the upper support ring (14), the bottom of the lower pipeline (24) is connected to the middle part of the valve hole (13), and the upper valve core (17) can be located below the part where the lower pipeline (24) is connected to the valve hole (13) when pushed downward by an external force, so that the lower pipeline (24) is connected to the lower through hole (22).

3. The device for rock drilling in a mine according to claim 2, characterized in that: A guide plate (25) made of metal is fixed in the chamber (5), and the guide plate (25) divides the chamber (5) into an uninterrupted and curved water flow channel (26), one end of the water flow channel (26) is connected to the upper through hole (21), and the other end is connected to the lower through hole (22).

4. The device for rock drilling in a mine according to claim 2, characterized in that: The lower support plate comprises a lower support tube (27), a lower rotating plate (28), a sliding arm (29), a roller (30), and a secondary compression spring (31). The lower support tube (27) is coaxially plugged with the drill rod (1) and fixed to the top of the hollow shaft (8). The lower support tube (27) is coaxially rotatably connected to the lower rotating plate (28) outside. The lower rotating plate (28) is circumferentially and equiangularly radially slidably connected to four sliding arms (29). The ends of the sliding arms (29) away from the virtual axis of the drill rod (1) are respectively rotatably connected to two rollers (30). The virtual axis of the rollers (30) is perpendicular to the virtual axis of the drill rod (1). A secondary compression spring (31) is also fixed between the sliding arms (29) and the lower rotating plate (28). Under the elastic repulsive force of the secondary compression spring (31), the sliding arms (29) have a tendency to move away from the virtual axis of the drill rod (1). The lower discharge port (11) passes through the circumference of the lower rotating plate (28) from top to bottom.

5. The device for rock drilling in a mine according to claim 4, characterized in that: An upper support plate is installed on the upper part of the drill rod (1), and the upper support plate comprises an upper support tube (33), an upper rotating disk (34), a sliding arm (29), a roller (30), a secondary compression spring (31), an upper discharge port (35), and a one-way valve. The upper support tube (33) is coaxially plugged with the drill rod (1), and the upper rotating disk (34) is coaxially rotatably connected to the outer side of the upper support tube (33). The upper rotating disk (34) is also circumferentially and equiangularly radially slidably connected to four sliding arms (29). The ends of each sliding arm (29) away from the virtual axis of the drill rod (1) are also rotatably connected to two rollers (30). A secondary compression spring (31) is also fixed between the sliding arm (29) and the upper rotating disk (34). The sliding arm (29) slidably connected to the upper rotating disk (34) has a tendency to move away from the virtual axis of the drill rod (1) under the elastic repulsive force of the secondary compression spring (31). The lower rotating disk (28) is connected to the upper rotating disk (34). A guide cylinder (36) is fixed between the rotating disks (34), and the guide cylinder (36) is coaxially arranged with respect to the drill rod (1). The upper support disk is penetrated by a plurality of upper discharge ports (35) from top to bottom, and a one-way valve is also installed in the upper discharge port (35). The one-way valve in the upper discharge port (35) can block the upper discharge port (35). The water delivery pipeline also includes a middle pipeline (37), a middle water inlet hole (38), a middle drainage hole (39), and a secondary one-way valve. The middle pipeline (37) is located in the drill rod (1) and radially penetrates the drill rod (1) to form a middle water inlet hole (38) and a middle drainage hole (39). The middle drainage hole (39) is installed with a secondary check valve (391). The secondary check valve (391) only allows fluid to flow out of the middle drainage hole (39). The middle drainage hole (39) is located in the guide cylinder (36), and the middle water inlet hole (38) is located outside and above the guide cylinder (36).

6. The device for rock drilling in a mine according to claim 5, characterized in that: An annular air bag (40) is fixed on the outer circumference of the lower rotating disk (28) and the upper rotating disk (34), the outer circumferential wall of the air bag (40) is exposed to the outside, the air bag (40) is coaxially arranged with the drill rod (1), and the inner circumferential part is fixedly connected to a vent nozzle (41), the lower rotating disk (28) is fixed with a two-way nozzle (42), and the opening at the bottom of the two-way nozzle (42) is fixedly connected to the vent nozzle (41) of the air bag (40) of the lower rotating disk (28), A vertical three-way nozzle (43) is fixed to the upper support plate, a central opening of the three-way nozzle (43) is fixedly connected to the vent nozzle (41) of the air bag (40) of the upper support plate, an upper opening of the three-way nozzle (43) is connected to an external compressed air supply system, a lower air delivery pipe (44) is fixed to the bottom opening of the three-way nozzle (43), and is connected to the upper part of the two-way nozzle (42) through the lower air delivery pipe (44), and the lower air delivery pipe (44) is located in the guide cylinder (36).

7. The device for rock drilling in a mine according to claim 6, characterized in that: The upper pipeline (23) and the upper part of the drill rod (1) are radially penetrated to form an upper water inlet hole (45), and the lower pipeline (24) and the upper part of the drill rod (1) are radially penetrated to form a lower water inlet hole (46). The upper water inlet hole (45) and the lower water inlet hole (46) are respectively located above the upper support plate. A vertical mounting plate (47) is inserted into the upper part of the drill rod (1). The mounting plate (47) is fastened to the drill rod (1) by fasteners. The mounting plate (47) is sealingly rotatably connected to a water delivery cylinder (48). The water delivery cylinder (48) is fixedly connected to three water delivery nozzles (49) and forms three separate water delivery chambers (upper, middle and lower) with the mounting plate (47). 50), each of the water delivery nozzles (49) is respectively connected to each of the water delivery chambers (50), the upper water inlet hole (45), the middle water inlet hole (38) and the lower water inlet hole (46) are respectively connected to each of the water delivery chambers (50), a support arm (51) is fixed to the outer wall of the water delivery cylinder (48), a vertical upper air delivery pipe (52) is fixed to the support arm (51), the upper air delivery pipe (52) is fixedly connected to the upper opening of the three-way nozzle (43), the upper opening of the three-way nozzle (43) is connected to an external compressed air supply system through the upper air delivery pipe (52), and each of the water delivery nozzles (49) is connected to an external water supply system through an external hose.

8. A rock drilling device for mines according to any one of claims 5 to 7, characterized in that: The one-way valve comprises a baffle (53), a baffle plate (54), and a torsion spring (55). The inner walls of the lower discharge outlet (11) and the upper discharge outlet (35) are respectively fixed with horizontal baffle plates (53), and are respectively hinged with baffle plates (54) up and down. The hinged position of the baffle plate (54) is away from the baffle plate (53). A torsion spring (55) is installed between the lower discharge outlet (11) and the baffle plate (54) therein. A torsion spring (55) is also installed between the upper discharge outlet (35) and the baffle plate (54) therein. The baffle plate (54) always has a tendency to swing downward under the elastic repulsive force of the torsion spring (55). Under the elastic repulsive force of the torsion spring (55), the baffle plate (54) can contact with the top end of the baffle plate (53) to block the lower discharge outlet (11) and the upper discharge outlet (35) respectively, and can flip upward when pushed upward by an external force to make the lower discharge outlet (11) and the upper discharge outlet (35) conductive.

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